package com.atguigu.order.listener;

import com.alipay.api.AlipayApiException;
import com.alipay.api.internal.util.AlipaySignature;
import com.atguigu.order.config.AlipayTemplate;
import com.atguigu.order.service.OrderService;
import com.atguigu.order.vo.PayAsyncVo;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;

/**
 * 异步接收支付宝成功回调
 */
@RestController
public class OrderPayedListener {

  @Resource
  private AlipayTemplate alipayTemplate;

  @Resource
  private OrderService orderService;

  @PostMapping("/payed/notify")
  public String handlerAlipay(HttpServletRequest request, PayAsyncVo payAsyncVo) throws AlipayApiException {
    System.out.println("收到支付宝异步通知******************");
    // 只要收到支付宝的异步通知，返回 success 支付宝便不再通知
    // 获取支付宝POST过来反馈信息
    //TODO 需要验签
    Map<String, String> params = new HashMap<>();
    Map<String, String[]> requestParams = request.getParameterMap();
    for (String name : requestParams.keySet()) {
      String[] values = requestParams.get(name);
      String valueStr = "";
      for (int i = 0; i < values.length; i++) {
        valueStr = (i == values.length - 1) ? valueStr + values[i]
          : valueStr + values[i] + ",";
      }
      //乱码解决，这段代码在出现乱码时使用
      // valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
      params.put(name, valueStr);
    }

    boolean signVerified = AlipaySignature.rsaCheckV1(params, alipayTemplate.getAlipay_public_key(),
      alipayTemplate.getCharset(), alipayTemplate.getSign_type()); //调用SDK验证签名

    if (signVerified) {
      System.out.println("支付宝异步通知验签成功");
      //修改订单状态
      orderService.handlerPayResult(payAsyncVo);
      return "success";
    } else {
      System.out.println("支付宝异步通知验签失败");

      return "error";
    }
  }

  @GetMapping("/payed/test")
  public String test() {
    return "test";
  }
}
